1 /* SCTP kernel implementation
2 * (C) Copyright IBM Corp. 2001, 2004
3 * Copyright (c) 1999-2000 Cisco, Inc.
4 * Copyright (c) 1999-2001 Motorola, Inc.
5 * Copyright (c) 2002 Intel Corp.
7 * This file is part of the SCTP kernel implementation
9 * This header represents the structures and constants needed to support
10 * the SCTP Extension to the Sockets API.
12 * This SCTP implementation is free software;
13 * you can redistribute it and/or modify it under the terms of
14 * the GNU General Public License as published by
15 * the Free Software Foundation; either version 2, or (at your option)
18 * This SCTP implementation is distributed in the hope that it
19 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
20 * ************************
21 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
22 * See the GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with GNU CC; see the file COPYING. If not, write to
26 * the Free Software Foundation, 59 Temple Place - Suite 330,
27 * Boston, MA 02111-1307, USA.
29 * Please send any bug reports or fixes you make to the
31 * lksctp developers <lksctp-developers@lists.sourceforge.net>
33 * Or submit a bug report through the following website:
34 * http://www.sf.net/projects/lksctp
36 * Written or modified by:
37 * La Monte H.P. Yarroll <piggy@acm.org>
38 * R. Stewart <randall@sctp.chicago.il.us>
39 * K. Morneau <kmorneau@cisco.com>
40 * Q. Xie <qxie1@email.mot.com>
41 * Karl Knutson <karl@athena.chicago.il.us>
42 * Jon Grimm <jgrimm@us.ibm.com>
43 * Daisy Chang <daisyc@us.ibm.com>
44 * Ryan Layer <rmlayer@us.ibm.com>
45 * Ardelle Fan <ardelle.fan@intel.com>
46 * Sridhar Samudrala <sri@us.ibm.com>
48 * Any bugs reported given to us we will try to fix... any fixes shared will
49 * be incorporated into the next SCTP release.
52 #ifndef __net_sctp_user_h__
53 #define __net_sctp_user_h__
55 #include <linux/types.h>
56 #include <linux/socket.h>
58 typedef __s32 sctp_assoc_t;
60 /* The following symbols come from the Sockets API Extensions for
61 * SCTP <draft-ietf-tsvwg-sctpsocket-07.txt>.
63 #define SCTP_RTOINFO 0
64 #define SCTP_ASSOCINFO 1
65 #define SCTP_INITMSG 2
66 #define SCTP_NODELAY 3 /* Get/set nodelay option. */
67 #define SCTP_AUTOCLOSE 4
68 #define SCTP_SET_PEER_PRIMARY_ADDR 5
69 #define SCTP_PRIMARY_ADDR 6
70 #define SCTP_ADAPTATION_LAYER 7
71 #define SCTP_DISABLE_FRAGMENTS 8
72 #define SCTP_PEER_ADDR_PARAMS 9
73 #define SCTP_DEFAULT_SEND_PARAM 10
74 #define SCTP_EVENTS 11
75 #define SCTP_I_WANT_MAPPED_V4_ADDR 12 /* Turn on/off mapped v4 addresses */
76 #define SCTP_MAXSEG 13 /* Get/set maximum fragment. */
77 #define SCTP_STATUS 14
78 #define SCTP_GET_PEER_ADDR_INFO 15
79 #define SCTP_DELAYED_ACK_TIME 16
80 #define SCTP_DELAYED_ACK SCTP_DELAYED_ACK_TIME
81 #define SCTP_DELAYED_SACK SCTP_DELAYED_ACK_TIME
82 #define SCTP_CONTEXT 17
83 #define SCTP_FRAGMENT_INTERLEAVE 18
84 #define SCTP_PARTIAL_DELIVERY_POINT 19 /* Set/Get partial delivery point */
85 #define SCTP_MAX_BURST 20 /* Set/Get max burst */
86 #define SCTP_AUTH_CHUNK 21 /* Set only: add a chunk type to authenticate */
87 #define SCTP_HMAC_IDENT 22
88 #define SCTP_AUTH_KEY 23
89 #define SCTP_AUTH_ACTIVE_KEY 24
90 #define SCTP_AUTH_DELETE_KEY 25
91 #define SCTP_PEER_AUTH_CHUNKS 26 /* Read only */
92 #define SCTP_LOCAL_AUTH_CHUNKS 27 /* Read only */
93 #define SCTP_GET_ASSOC_NUMBER 28 /* Read only */
94 #define SCTP_GET_ASSOC_ID_LIST 29 /* Read only */
95 #define SCTP_AUTO_ASCONF 30
96 #define SCTP_PEER_ADDR_THLDS 31
98 /* Internal Socket Options. Some of the sctp library functions are
99 * implemented using these socket options.
101 #define SCTP_SOCKOPT_BINDX_ADD 100 /* BINDX requests for adding addrs */
102 #define SCTP_SOCKOPT_BINDX_REM 101 /* BINDX requests for removing addrs. */
103 #define SCTP_SOCKOPT_PEELOFF 102 /* peel off association. */
104 /* Options 104-106 are deprecated and removed. Do not use this space */
105 #define SCTP_SOCKOPT_CONNECTX_OLD 107 /* CONNECTX old requests. */
106 #define SCTP_GET_PEER_ADDRS 108 /* Get all peer address. */
107 #define SCTP_GET_LOCAL_ADDRS 109 /* Get all local address. */
108 #define SCTP_SOCKOPT_CONNECTX 110 /* CONNECTX requests. */
109 #define SCTP_SOCKOPT_CONNECTX3 111 /* CONNECTX requests (updated) */
110 #define SCTP_GET_ASSOC_STATS 112 /* Read only */
113 * 5.2.1 SCTP Initiation Structure (SCTP_INIT)
115 * This cmsghdr structure provides information for initializing new
116 * SCTP associations with sendmsg(). The SCTP_INITMSG socket option
117 * uses this same data structure. This structure is not used for
120 * cmsg_level cmsg_type cmsg_data[]
121 * ------------ ------------ ----------------------
122 * IPPROTO_SCTP SCTP_INIT struct sctp_initmsg
125 struct sctp_initmsg {
126 __u16 sinit_num_ostreams;
127 __u16 sinit_max_instreams;
128 __u16 sinit_max_attempts;
129 __u16 sinit_max_init_timeo;
133 * 5.2.2 SCTP Header Information Structure (SCTP_SNDRCV)
135 * This cmsghdr structure specifies SCTP options for sendmsg() and
136 * describes SCTP header information about a received message through
139 * cmsg_level cmsg_type cmsg_data[]
140 * ------------ ------------ ----------------------
141 * IPPROTO_SCTP SCTP_SNDRCV struct sctp_sndrcvinfo
144 struct sctp_sndrcvinfo {
150 __u32 sinfo_timetolive;
153 sctp_assoc_t sinfo_assoc_id;
157 * sinfo_flags: 16 bits (unsigned integer)
159 * This field may contain any of the following flags and is composed of
160 * a bitwise OR of these values.
163 enum sctp_sinfo_flags {
164 SCTP_UNORDERED = 1, /* Send/receive message unordered. */
165 SCTP_ADDR_OVER = 2, /* Override the primary destination. */
166 SCTP_ABORT=4, /* Send an ABORT message to the peer. */
167 SCTP_SACK_IMMEDIATELY = 8, /* SACK should be sent without delay */
168 SCTP_EOF=MSG_FIN, /* Initiate graceful shutdown process. */
172 /* These are cmsg_types. */
173 typedef enum sctp_cmsg_type {
174 SCTP_INIT, /* 5.2.1 SCTP Initiation Structure */
175 SCTP_SNDRCV, /* 5.2.2 SCTP Header Information Structure */
180 * 5.3.1.1 SCTP_ASSOC_CHANGE
182 * Communication notifications inform the ULP that an SCTP association
183 * has either begun or ended. The identifier for a new association is
184 * provided by this notificaion. The notification information has the
188 struct sctp_assoc_change {
194 __u16 sac_outbound_streams;
195 __u16 sac_inbound_streams;
196 sctp_assoc_t sac_assoc_id;
201 * sac_state: 32 bits (signed integer)
203 * This field holds one of a number of values that communicate the
204 * event that happened to the association. They include:
206 * Note: The following state names deviate from the API draft as
207 * the names clash too easily with other kernel symbols.
209 enum sctp_sac_state {
218 * 5.3.1.2 SCTP_PEER_ADDR_CHANGE
220 * When a destination address on a multi-homed peer encounters a change
221 * an interface details event is sent. The information has the
222 * following structure:
224 struct sctp_paddr_change {
228 struct sockaddr_storage spc_aaddr;
231 sctp_assoc_t spc_assoc_id;
232 } __attribute__((packed, aligned(4)));
235 * spc_state: 32 bits (signed integer)
237 * This field holds one of a number of values that communicate the
238 * event that happened to the address. They include:
240 enum sctp_spc_state {
242 SCTP_ADDR_UNREACHABLE,
251 * 5.3.1.3 SCTP_REMOTE_ERROR
253 * A remote peer may send an Operational Error message to its peer.
254 * This message indicates a variety of error conditions on an
255 * association. The entire error TLV as it appears on the wire is
256 * included in a SCTP_REMOTE_ERROR event. Please refer to the SCTP
257 * specification [SCTP] and any extensions for a list of possible
258 * error formats. SCTP error TLVs have the format:
260 struct sctp_remote_error {
265 sctp_assoc_t sre_assoc_id;
271 * 5.3.1.4 SCTP_SEND_FAILED
273 * If SCTP cannot deliver a message it may return the message as a
276 struct sctp_send_failed {
281 struct sctp_sndrcvinfo ssf_info;
282 sctp_assoc_t ssf_assoc_id;
287 * ssf_flags: 16 bits (unsigned integer)
289 * The flag value will take one of the following values
291 * SCTP_DATA_UNSENT - Indicates that the data was never put on
294 * SCTP_DATA_SENT - Indicates that the data was put on the wire.
295 * Note that this does not necessarily mean that the
296 * data was (or was not) successfully delivered.
298 enum sctp_ssf_flags {
304 * 5.3.1.5 SCTP_SHUTDOWN_EVENT
306 * When a peer sends a SHUTDOWN, SCTP delivers this notification to
307 * inform the application that it should cease sending data.
309 struct sctp_shutdown_event {
313 sctp_assoc_t sse_assoc_id;
317 * 5.3.1.6 SCTP_ADAPTATION_INDICATION
319 * When a peer sends a Adaptation Layer Indication parameter , SCTP
320 * delivers this notification to inform the application
321 * that of the peers requested adaptation layer.
323 struct sctp_adaptation_event {
327 __u32 sai_adaptation_ind;
328 sctp_assoc_t sai_assoc_id;
332 * 5.3.1.7 SCTP_PARTIAL_DELIVERY_EVENT
334 * When a receiver is engaged in a partial delivery of a
335 * message this notification will be used to indicate
338 struct sctp_pdapi_event {
342 __u32 pdapi_indication;
343 sctp_assoc_t pdapi_assoc_id;
346 enum { SCTP_PARTIAL_DELIVERY_ABORTED=0, };
348 struct sctp_authkey_event {
352 __u16 auth_keynumber;
353 __u16 auth_altkeynumber;
354 __u32 auth_indication;
355 sctp_assoc_t auth_assoc_id;
358 enum { SCTP_AUTH_NEWKEY = 0, };
361 * 6.1.9. SCTP_SENDER_DRY_EVENT
363 * When the SCTP stack has no more user data to send or retransmit, this
364 * notification is given to the user. Also, at the time when a user app
365 * subscribes to this event, if there is no data to be sent or
366 * retransmit, the stack will immediately send up this notification.
368 struct sctp_sender_dry_event {
369 __u16 sender_dry_type;
370 __u16 sender_dry_flags;
371 __u32 sender_dry_length;
372 sctp_assoc_t sender_dry_assoc_id;
376 * Described in Section 7.3
377 * Ancillary Data and Notification Interest Options
379 struct sctp_event_subscribe {
380 __u8 sctp_data_io_event;
381 __u8 sctp_association_event;
382 __u8 sctp_address_event;
383 __u8 sctp_send_failure_event;
384 __u8 sctp_peer_error_event;
385 __u8 sctp_shutdown_event;
386 __u8 sctp_partial_delivery_event;
387 __u8 sctp_adaptation_layer_event;
388 __u8 sctp_authentication_event;
389 __u8 sctp_sender_dry_event;
393 * 5.3.1 SCTP Notification Structure
395 * The notification structure is defined as the union of all
396 * notification types.
399 union sctp_notification {
401 __u16 sn_type; /* Notification type. */
405 struct sctp_assoc_change sn_assoc_change;
406 struct sctp_paddr_change sn_paddr_change;
407 struct sctp_remote_error sn_remote_error;
408 struct sctp_send_failed sn_send_failed;
409 struct sctp_shutdown_event sn_shutdown_event;
410 struct sctp_adaptation_event sn_adaptation_event;
411 struct sctp_pdapi_event sn_pdapi_event;
412 struct sctp_authkey_event sn_authkey_event;
413 struct sctp_sender_dry_event sn_sender_dry_event;
417 * All standard values for sn_type flags are greater than 2^15.
418 * Values from 2^15 and down are reserved.
422 SCTP_SN_TYPE_BASE = (1<<15),
424 SCTP_PEER_ADDR_CHANGE,
428 SCTP_PARTIAL_DELIVERY_EVENT,
429 SCTP_ADAPTATION_INDICATION,
430 SCTP_AUTHENTICATION_EVENT,
431 #define SCTP_AUTHENTICATION_INDICATION SCTP_AUTHENTICATION_EVENT
432 SCTP_SENDER_DRY_EVENT,
435 /* Notification error codes used to fill up the error fields in some
437 * SCTP_PEER_ADDRESS_CHAGE : spc_error
438 * SCTP_ASSOC_CHANGE : sac_error
439 * These names should be potentially included in the draft 04 of the SCTP
440 * sockets API specification.
442 typedef enum sctp_sn_error {
443 SCTP_FAILED_THRESHOLD,
445 SCTP_HEARTBEAT_SUCCESS,
446 SCTP_RESPONSE_TO_USER_REQ,
448 SCTP_SHUTDOWN_GUARD_EXPIRES,
453 * 7.1.1 Retransmission Timeout Parameters (SCTP_RTOINFO)
455 * The protocol parameters used to initialize and bound retransmission
456 * timeout (RTO) are tunable. See [SCTP] for more information on how
457 * these parameters are used in RTO calculation.
459 struct sctp_rtoinfo {
460 sctp_assoc_t srto_assoc_id;
467 * 7.1.2 Association Parameters (SCTP_ASSOCINFO)
469 * This option is used to both examine and set various association and
470 * endpoint parameters.
472 struct sctp_assocparams {
473 sctp_assoc_t sasoc_assoc_id;
474 __u16 sasoc_asocmaxrxt;
475 __u16 sasoc_number_peer_destinations;
476 __u32 sasoc_peer_rwnd;
477 __u32 sasoc_local_rwnd;
478 __u32 sasoc_cookie_life;
482 * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR)
484 * Requests that the peer mark the enclosed address as the association
485 * primary. The enclosed address must be one of the association's
486 * locally bound addresses. The following structure is used to make a
487 * set primary request:
489 struct sctp_setpeerprim {
490 sctp_assoc_t sspp_assoc_id;
491 struct sockaddr_storage sspp_addr;
492 } __attribute__((packed, aligned(4)));
495 * 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR)
497 * Requests that the local SCTP stack use the enclosed peer address as
498 * the association primary. The enclosed address must be one of the
499 * association peer's addresses. The following structure is used to
500 * make a set peer primary request:
503 sctp_assoc_t ssp_assoc_id;
504 struct sockaddr_storage ssp_addr;
505 } __attribute__((packed, aligned(4)));
508 * 7.1.11 Set Adaptation Layer Indicator (SCTP_ADAPTATION_LAYER)
510 * Requests that the local endpoint set the specified Adaptation Layer
511 * Indication parameter for all future INIT and INIT-ACK exchanges.
513 struct sctp_setadaptation {
514 __u32 ssb_adaptation_ind;
518 * 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS)
520 * Applications can enable or disable heartbeats for any peer address
521 * of an association, modify an address's heartbeat interval, force a
522 * heartbeat to be sent immediately, and adjust the address's maximum
523 * number of retransmissions sent before an address is considered
524 * unreachable. The following structure is used to access and modify an
525 * address's parameters:
527 enum sctp_spp_flags {
528 SPP_HB_ENABLE = 1<<0, /*Enable heartbeats*/
529 SPP_HB_DISABLE = 1<<1, /*Disable heartbeats*/
530 SPP_HB = SPP_HB_ENABLE | SPP_HB_DISABLE,
531 SPP_HB_DEMAND = 1<<2, /*Send heartbeat immediately*/
532 SPP_PMTUD_ENABLE = 1<<3, /*Enable PMTU discovery*/
533 SPP_PMTUD_DISABLE = 1<<4, /*Disable PMTU discovery*/
534 SPP_PMTUD = SPP_PMTUD_ENABLE | SPP_PMTUD_DISABLE,
535 SPP_SACKDELAY_ENABLE = 1<<5, /*Enable SACK*/
536 SPP_SACKDELAY_DISABLE = 1<<6, /*Disable SACK*/
537 SPP_SACKDELAY = SPP_SACKDELAY_ENABLE | SPP_SACKDELAY_DISABLE,
538 SPP_HB_TIME_IS_ZERO = 1<<7, /* Set HB delay to 0 */
541 struct sctp_paddrparams {
542 sctp_assoc_t spp_assoc_id;
543 struct sockaddr_storage spp_address;
544 __u32 spp_hbinterval;
545 __u16 spp_pathmaxrxt;
549 } __attribute__((packed, aligned(4)));
552 * 7.1.18. Add a chunk that must be authenticated (SCTP_AUTH_CHUNK)
554 * This set option adds a chunk type that the user is requesting to be
555 * received only in an authenticated way. Changes to the list of chunks
556 * will only effect future associations on the socket.
558 struct sctp_authchunk {
563 * 7.1.19. Get or set the list of supported HMAC Identifiers (SCTP_HMAC_IDENT)
565 * This option gets or sets the list of HMAC algorithms that the local
566 * endpoint requires the peer to use.
568 struct sctp_hmacalgo {
569 __u32 shmac_num_idents;
570 __u16 shmac_idents[];
574 * 7.1.20. Set a shared key (SCTP_AUTH_KEY)
576 * This option will set a shared secret key which is used to build an
577 * association shared key.
579 struct sctp_authkey {
580 sctp_assoc_t sca_assoc_id;
587 * 7.1.21. Get or set the active shared key (SCTP_AUTH_ACTIVE_KEY)
589 * This option will get or set the active shared key to be used to build
590 * the association shared key.
593 struct sctp_authkeyid {
594 sctp_assoc_t scact_assoc_id;
595 __u16 scact_keynumber;
600 * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK)
602 * This option will effect the way delayed acks are performed. This
603 * option allows you to get or set the delayed ack time, in
604 * milliseconds. It also allows changing the delayed ack frequency.
605 * Changing the frequency to 1 disables the delayed sack algorithm. If
606 * the assoc_id is 0, then this sets or gets the endpoints default
607 * values. If the assoc_id field is non-zero, then the set or get
608 * effects the specified association for the one to many model (the
609 * assoc_id field is ignored by the one to one model). Note that if
610 * sack_delay or sack_freq are 0 when setting this option, then the
611 * current values will remain unchanged.
613 struct sctp_sack_info {
614 sctp_assoc_t sack_assoc_id;
619 struct sctp_assoc_value {
620 sctp_assoc_t assoc_id;
621 uint32_t assoc_value;
625 * 7.2.2 Peer Address Information
627 * Applications can retrieve information about a specific peer address
628 * of an association, including its reachability state, congestion
629 * window, and retransmission timer values. This information is
630 * read-only. The following structure is used to access this
633 struct sctp_paddrinfo {
634 sctp_assoc_t spinfo_assoc_id;
635 struct sockaddr_storage spinfo_address;
641 } __attribute__((packed, aligned(4)));
643 /* Peer addresses's state. */
644 /* UNKNOWN: Peer address passed by the upper layer in sendmsg or connect[x]
646 * UNCONFIRMED: Peer address received in INIT/INIT-ACK address parameters.
647 * Not yet confirmed by a heartbeat and not available for data
649 * ACTIVE : Peer address confirmed, active and available for data transfers.
650 * INACTIVE: Peer address inactive and not available for data transfers.
652 enum sctp_spinfo_state {
657 SCTP_UNKNOWN = 0xffff /* Value used for transport state unknown */
661 * 7.2.1 Association Status (SCTP_STATUS)
663 * Applications can retrieve current status information about an
664 * association, including association state, peer receiver window size,
665 * number of unacked data chunks, and number of data chunks pending
666 * receipt. This information is read-only. The following structure is
667 * used to access this information:
670 sctp_assoc_t sstat_assoc_id;
673 __u16 sstat_unackdata;
674 __u16 sstat_penddata;
676 __u16 sstat_outstrms;
677 __u32 sstat_fragmentation_point;
678 struct sctp_paddrinfo sstat_primary;
682 * 7.2.3. Get the list of chunks the peer requires to be authenticated
683 * (SCTP_PEER_AUTH_CHUNKS)
685 * This option gets a list of chunks for a specified association that
686 * the peer requires to be received authenticated only.
688 struct sctp_authchunks {
689 sctp_assoc_t gauth_assoc_id;
690 __u32 gauth_number_of_chunks;
691 uint8_t gauth_chunks[];
695 * 8.2.6. Get the Current Identifiers of Associations
696 * (SCTP_GET_ASSOC_ID_LIST)
698 * This option gets the current list of SCTP association identifiers of
699 * the SCTP associations handled by a one-to-many style socket.
701 struct sctp_assoc_ids {
702 __u32 gaids_number_of_ids;
703 sctp_assoc_t gaids_assoc_id[];
707 * 8.3, 8.5 get all peer/local addresses in an association.
708 * This parameter struct is used by SCTP_GET_PEER_ADDRS and
709 * SCTP_GET_LOCAL_ADDRS socket options used internally to implement
710 * sctp_getpaddrs() and sctp_getladdrs() API.
712 struct sctp_getaddrs_old {
713 sctp_assoc_t assoc_id;
715 struct sockaddr __user *addrs;
717 struct sctp_getaddrs {
718 sctp_assoc_t assoc_id; /*input*/
719 __u32 addr_num; /*output*/
720 __u8 addrs[0]; /*output, variable size*/
723 /* A socket user request obtained via SCTP_GET_ASSOC_STATS that retrieves
724 * association stats. All stats are counts except sas_maxrto and
725 * sas_obs_rto_ipaddr. maxrto is the max observed rto + transport since
726 * the last call. Will return 0 when RTO was not update since last call
728 struct sctp_assoc_stats {
729 sctp_assoc_t sas_assoc_id; /* Input */
730 /* Transport of observed max RTO */
731 struct sockaddr_storage sas_obs_rto_ipaddr;
732 __u64 sas_maxrto; /* Maximum Observed RTO for period */
733 __u64 sas_isacks; /* SACKs received */
734 __u64 sas_osacks; /* SACKs sent */
735 __u64 sas_opackets; /* Packets sent */
736 __u64 sas_ipackets; /* Packets received */
737 __u64 sas_rtxchunks; /* Retransmitted Chunks */
738 __u64 sas_outofseqtsns;/* TSN received > next expected */
739 __u64 sas_idupchunks; /* Dups received (ordered+unordered) */
740 __u64 sas_gapcnt; /* Gap Acknowledgements Received */
741 __u64 sas_ouodchunks; /* Unordered data chunks sent */
742 __u64 sas_iuodchunks; /* Unordered data chunks received */
743 __u64 sas_oodchunks; /* Ordered data chunks sent */
744 __u64 sas_iodchunks; /* Ordered data chunks received */
745 __u64 sas_octrlchunks; /* Control chunks sent */
746 __u64 sas_ictrlchunks; /* Control chunks received */
749 /* These are bit fields for msghdr->msg_flags. See section 5.1. */
750 /* On user space Linux, these live in <bits/socket.h> as an enum. */
751 enum sctp_msg_flags {
752 MSG_NOTIFICATION = 0x8000,
753 #define MSG_NOTIFICATION MSG_NOTIFICATION
759 * The flags parameter is formed from the bitwise OR of zero or more of the
760 * following currently defined flags:
762 #define SCTP_BINDX_ADD_ADDR 0x01
763 #define SCTP_BINDX_REM_ADDR 0x02
765 /* This is the structure that is passed as an argument(optval) to
766 * getsockopt(SCTP_SOCKOPT_PEELOFF).
769 sctp_assoc_t associd;
771 } sctp_peeloff_arg_t;
774 * Peer Address Thresholds socket option
776 struct sctp_paddrthlds {
777 sctp_assoc_t spt_assoc_id;
778 struct sockaddr_storage spt_address;
779 __u16 spt_pathmaxrxt;
780 __u16 spt_pathpfthld;
782 #endif /* __net_sctp_user_h__ */